Role of alloyed Y in improving the corrosion resistance of extruded Mg-Al-Ca-based alloy

被引：75

作者：

Baek, Soo-Min ^{[1
]}

Kang, Jeong Su ^{[1
]}

Shin, Hyung-Joon ^{[1
]}

Yim, Chang Dong ^{[2
]}

You, Bong Sun ^{[2
]}

Ha, Heon-Young ^{[2
]}

Park, Sung Soo ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 44919, South Korea

[2] Korea Inst Mat Sci, Chang Won 51508, South Korea

来源：

CORROSION SCIENCE | 2017年 / 118卷

基金：

新加坡国家研究基金会;

关键词：

Alloy; Magnesium; Weight loss; Pitting corrosion; AZ31 MAGNESIUM ALLOY; HIGH-PURITY MG; OXIDATION BEHAVIOR; AZ91; ALLOY; ELEVATED-TEMPERATURES; ADDITIONS; MICROSTRUCTURE; ALUMINUM; PHASES; SN;

D O I：

10.1016/j.corsci.2017.01.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report that alloying with Y remarkably enhances the corrosion resistance of extruded Mg-Al-Ca based alloy. The corrosion rates, measured by immersion tests in 0.6 M NaCl solution at 25 degrees C, were 0.31 and 1.84 mm y(-1) for the Mg-6Al-1Zn-0.5Ca-0.3Mn (wt.%) alloys with and without 0.25 wt.% Y, respectively. The improved corrosion resistance is mainly attributed to a change in the type of Al-containing intermetallic particles toward reducing their electrochemical nobility, resulting in reduced H-2 evolution rate during corrosion. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：227 / 232

页数：6

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